RE: Re: WorldPlot Question
- To: mathgroup at smc.vnet.net
- Subject: [mg47064] RE: [mg47043] Re: WorldPlot Question
- From: David.Annetts at csiro.au
- Date: Mon, 22 Mar 2004 22:39:29 -0500 (EST)
- Sender: owner-wri-mathgroup at wolfram.com
Hi Terry, > Sorry, but I found out that I have the Mathematica command > wrong. The > correct command is > WorldData["Country Name]. My same question below still stands. > .......Terry > > Terry wrote: > > >Hi All: > > In the WorldPlot package, it is possible to obtain the > vertices of > >the polygon that defines the border > >of a country by entering the command, > > WorldPoints["Country Name"] > > > >A fixed (default) number of vertex points is returned. > Now, is there > >a way to increase the number of points > >that this command returns with? If so, how? > >TIA, Inspection of the WorldPlot package shows that there is no way of increasing the number of points returned by the command WorldData["Country Name] short of editing the points themselves. You can get more points by interpolating the list eg. Needs["Miscellaneous`"] Needs["NumericalMath`"] ozo = WorldData["Australia"]; ozi = SplineFit[ozo[[1]], Cubic] ozn = ozi[#] & /@ Range[0, 52, .5]; Regards, Dave. ========================================== Dr. David Annetts EM Modelling Analyst CSIRO DEM Tel: +612 9490 5416 North Ryde Fax: +612 9490 5467 Australia David.Annetts at csiro.au ===========================================